I am almost 100% that Pep will sign an extension. Based on logic:
1) He mentions the CWC too much and it's clear managing it is in his plans. No way he will leave the club with only 3 weeks for the new manager. He loves the club far too much for that.
2) He talks about planning for the next season, like the problems with injuries, resting in the WCW, wanting delay for the 1st PL match... again, clear that he is too involved to just leave.
3) His next adventure is a national team, but he will not take any team with only 1 year to prepare the world cup. He could take a break, but Pep only took a break because his last year with Barca left him depleted and with huge stress.
4) He is Abu Dhabi now. I don't think he would go there right now just to tell them no. It makes zero sense, but if for an extension + interviews + commercials... it just fits.
My guess is he will sign a 2 year extension, with two clauses: he can leave after 1 year, and the contract is null if we get hit with the 115 charges.